CVE-2020-6334 in 3D Visual Enterprise Viewer
Summary
by MITRE
SAP 3D Visual Enterprise Viewer, version - 9, allows a user to open manipulated SKP file received from untrusted sources which results in crashing of the application and becoming temporarily unavailable until the user restarts the application, this is caused due to Improper Input Validation.
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Analysis
by VulDB Data Team • 09/09/2020
SAP 3D Visual Enterprise Viewer version 9 contains a critical vulnerability classified as CVE-2020-6334 that stems from improper input validation when processing SKP files. This vulnerability represents a classic example of a buffer overflow or memory corruption issue that occurs when the application fails to properly validate or sanitize input data received from external sources. The flaw specifically manifests when the viewer encounters manipulated SKP files that have been crafted by adversaries to exploit the application's parsing mechanisms. The vulnerability falls under CWE-20, which describes improper input validation as a fundamental weakness in software security where applications do not adequately validate or sanitize data received from untrusted sources. This weakness creates a pathway for attackers to disrupt service availability and potentially execute malicious code within the application's execution context.
The technical exploitation of this vulnerability involves an attacker sending a specially crafted SKP file to a victim who has the SAP 3D Visual Enterprise Viewer installed. When the viewer attempts to parse and render the manipulated file, the application crashes due to the malformed input data corrupting memory structures or exceeding buffer boundaries. The crash results in complete application unavailability until the user manually restarts the program, creating a denial of service condition that can be particularly disruptive in enterprise environments where this viewer is used for critical 3D visualization tasks. The vulnerability demonstrates a lack of proper error handling and input sanitization mechanisms within the application's file parsing subsystem, which is a common pattern seen in legacy software that has not been updated to address modern security requirements. This issue aligns with ATT&CK technique T1499.004, which covers network denial of service attacks through application or service failures, and represents a straightforward exploitation vector that requires minimal technical skill to execute effectively.
The operational impact of CVE-2020-6334 extends beyond simple application instability to potentially compromise business continuity and productivity within organizations that rely on 3D visualization capabilities. In enterprise settings where this viewer is used for product design reviews, architectural visualization, or engineering collaboration, a successful exploitation can halt critical workflows and require IT intervention to restore service availability. The vulnerability's impact is particularly concerning given that it can be triggered through simple file attachments or downloads from untrusted sources, making it susceptible to social engineering attacks or automated exploitation campaigns. Organizations using SAP 3D Visual Enterprise Viewer version 9 should consider implementing immediate mitigations such as restricting file input sources, deploying network segmentation to limit exposure, and applying vendor-provided patches or updates. The vulnerability highlights the importance of input validation and proper error handling in security-critical applications, particularly those that process complex file formats from external sources. Security teams should monitor for indicators of compromise related to this vulnerability and consider implementing application whitelisting controls to prevent execution of unauthorized SKP files. The issue also underscores the broader challenge of maintaining security in specialized visualization software where the complexity of file formats creates numerous potential attack vectors that may not be adequately addressed by traditional security controls.